22637985 has 16 divisors (see below), whose sum is σ = 36360960. Its totient is φ = 12026880.

The previous prime is 22637983. The next prime is 22638013. The reversal of 22637985 is 58973622.

It is not a de Polignac number, because 22637985 - 2¹ = 22637983 is a prime.

It is not an unprimeable number, because it can be changed into a prime (22637983) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 1281 + ... + 6849.

It is an arithmetic number, because the mean of its divisors is an integer number (2272560).

Almost surely, 2^22637985 is an apocalyptic number.

It is an amenable number.

22637985 is a deficient number, since it is larger than the sum of its proper divisors (13722975).

22637985 is a wasteful number, since it uses less digits than its factorization.

22637985 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 5848.

The product of its digits is 181440, while the sum is 42.

The square root of 22637985 is about 4757.9391547181. The cubic root of 22637985 is about 282.8867389630.

The spelling of 22637985 in words is "twenty-two million, six hundred thirty-seven thousand, nine hundred eighty-five".